Valstrax

Flying, Haste
When Valstrax enters the battlefield, deal damage
equal to Valstrax's power, it gains First Strike util
end of turn.
Around the World - If Valstrax didn't defeat a
creature or dealt damage to a player this turn, Exile it
until your next upkeep. It then returns to the
battlefield with a +1/+0 counter for each time it has
been Exiled.